accumulators: fix long-standing dependency tracking bug. merge [80826], [80885], [80888] from trunk. fixes #7409

[SVN r80927]

libs/accumulators

@@ -1 +1 @@
-Subproject commit 3e140b5590c400017f2ee24801a8b063646e6572
+Subproject commit 397d8de5188879ffcffd34a6088afc533956b664

status/explicit-failures-markup.xml

@@ -45,6 +45,8 @@
         <toolset name="sun-5.8"/>
         <toolset name="sun-5.9"/>
         <toolset name="borland-*"/>
+        <toolset name="vacpp-*"/>
+        <toolset name="cray-*"/>
       </mark-unusable>
       <mark-expected-failures>
           <test name="tail_variate_means"/>